Compilare: main.cpp: In function 'int ct(pos&, pos&)': main.cpp:29:44: warning: array subscript has type 'char' [-Wchar-subscripts] if(valid(q.front().row + rmov[i], q.front().col + cmov[i])){ ^ main.cpp:29:69: warning: array subscript has type 'char' [-Wchar-subscripts] if(valid(q.front().row + rmov[i], q.front().col + cmov[i])){ ^ main.cpp:30:47: warning: array subscript has type 'char' [-Wchar-subscripts] q.push({q.front().row + rmov[i], q.front().col + cmov[i], q.front().dct + 1}); ^ main.cpp:30:72: warning: array subscript has type 'char' [-Wchar-subscripts] q.push({q.front().row + rmov[i], q.front().col + cmov[i], q.front().dct + 1}); ^ main.cpp:30:39: warning: narrowing conversion of '(((int)q.std::queue<_Tp, _Sequence>::front<pos, std::deque<pos, std::allocator<pos> > >().pos::row) + ((int)rmov[((int)i)]))' from 'int' to 'short int' inside { } [-Wnarrowing] q.push({q.front().row + rmov[i], q.front().col + cmov[i], q.front().dct + 1}); ~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:30:64: warning: narrowing conversion of '(((int)q.std::queue<_Tp, _Sequence>::front<pos, std::deque<pos, std::allocator<pos> > >().pos::col) + ((int)cmov[((int)i)]))' from 'int' to 'short int' inside { } [-Wnarrowing] q.push({q.front().row + rmov[i], q.front().col + cmov[i], q.front().dct + 1}); ~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:30:89: warning: narrowing conversion of '(((int)q.std::queue<_Tp, _Sequence>::front<pos, std::deque<pos, std::allocator<pos> > >().pos::dct) + 1)' from 'int' to 'short int' inside { } [-Wnarrowing] q.push({q.front().row + rmov[i], q.front().col + cmov[i], q.front().dct + 1}); ~~~~~~~~~~~~~~^~~ main.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type] } ^